The Data Discovery module detects any confidential text or image data stored and transmitted by the users within and beyond the Exchange Online mailboxes, OneDrive storages and SharePoint Online sites of your organization. By default, detected items containing confidential information are neither moved nor deleted, but displayed in the Quarantine list, so you can consider actions to prevent the possible leakage.
This section describes how to enable and configure tracing of the confidential information in text and image presentation.